Audio playback system



FIG. 1 is an exploded perspective view of an audio playback system, showing my new design, the opposite front face of the earcup being a mirror image;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the figures form no part of the claimed design. 

CLAIM I claim the ornamental design for an audio playback system, as shown and described. 